Difference between revisions of "Backup Setup"

Revision as of 11:16, 5 January 2017

Permanently mount backup storage

We will mount the provided backup storage onto KoBo Hosts's filesystem, making it permanently available. The backup system described in this article depends on backup storage being mounted on /media/kobo-backups/.

Store cretendials safely

Rather than putting Windows share credentials directly into the Host's fstab, where it is readable by all Host users, create the file containing sensitive information, and restrict access to the file to root alone. Host's fstab will reference this file.

$ sudo nano /etc/samba/kobo-backups.cred

username=kobo-pilot
password=F1xMyStreet

$ sudo chmod 0600 /etc/samba/kobo-backups.cred

Create mounting point and add entry to Host's fstab

$ sudo mkdir /media/kobo-backups
$ sudo nano /etc/fstab

...adding the following two lines at the end of the file. The second line starts with //192.168.50.50/ and contains everything upto the end.

# KOBO-Backups folder on 192.168.50.50
//192.168.50.50/KOBO-Backups /media/kobo-backups cifs credentials=/etc/samba/kobo-backups.cred,iocharset=utf8,sec=ntlm 0 0

The backup share will this be automatically mounted on every reboot of the system. To activate the changes immediately, issue the command

$ sudo umount -a

Backup script

$ sudo nano /usr/sbin/kobo-backup

#!/bin/bash
KOBO_DOCKER=/home/ate/kobo-docker
KEEP_DAYS=31
LOCAL=/srv/kobo-backups/
REMOTE=/media/kobo-backups/kobo-backups/

function log {
        echo  "`date +'[%d/%b/%Y:%k:%M:%S %z]'` $1"
}
if [[ $UID != 0 ]]; then
    echo "Please run this script as root:"
    echo "sudo $0 $*"
    exit 1
fi

log "MSF KoBo Toolbox backup script starting"
cd $KOBO_DOCKER

log "Postgres backup..."
docker exec kobodocker_postgres_1 bash -c "pg_dump --format=c --no-privileges --no-owner kobotoolbox -U postgres > /srv/db/backup/current.pgdump"
mv --verbose $KOBO_DOCKER/.vols/db/backup/current.pgdump $KOBO_DOCKER/backups/postgres/`date +%Y%m%d%H%M`.pgdump
log "postgres done"

log "Moving files..."
touch -t `date +%m%d0000` /tmp/$$
find $KOBO_DOCKER/backups/ -type f -newer /tmp/$$ -exec mv --verbose -f {} $LOCAL \;
rm /tmp/$$
log "mv done"

log "Remove archives older than $KEEP_DAYS days..."
find $LOCAL -type f -mtime +$KEEP_DAYS \( -name "*.tar" -o -name "*.tar.gz" -o -name "*.pgdump" -o -name "*.pgrestore" \) -exec rm --verbose {} \;
log "unlink done"

log "RSyncing local and remote backup destination..."
rsync --archive --delete  $LOCAL $REMOTE
log "rsync done"
log "MSF KoBo Toolbox backup script completed"
touch /root/kobo-last-backup.timestamp

echo "---"
echo "automated message sent by KoBo Toolbox backup * support@mreznisistemi.rs *"

$ sudo chown root:root /usr/sbin/kobo-backup
$ sudo chmod 0755 /usr/sbin/kobo-backup

Schedule backup execution

$ sudo nano /etc/cron.d/kobo-backup 

MAILTO=root
SHELL=/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

30 3 * * *   root    kobo-backup